Each end use customer location must be included on registration to participate as a resource in the PJM markets. Each location is identified by the unique EDC account number. The PJM system automatically notifies PJM if the same EDC account number has been included on two different registrations so that PJM can resolve the duplicate (the second registration is put on hold until it is resolved). Duplicates are not allowed since it could lead to double payment for same service in the PJM markets and violate existing PJM market rules. PJMs current process to resolve the duplicate is the following: 1) Contact both CSPs and request a copy of signed contract for registration submitted 2) If both have executed agreements, then request the end use customer to determine which registration should be maintained and which registration should be terminated. Several CSPs have voiced concerns about the PJM process since it allows the end use customer to violate their contract and puts the CSP in the position to take legal action as necessary. PJM received a significant volume (>300) duplicates during 11/12 DR/ILR registration process which are very time consuming to resolve and involve contact to end use customers that are not PJM members. There is an opportunity to evaluate existing best practices from other ISO/RTOs and in the competitive retail market to improve or change the existing PJM process for duplicate registration resolution.